CN104237831A - Set for calibrating tester of arrester counter - Google Patents
Set for calibrating tester of arrester counter Download PDFInfo
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Abstract
本发明提供一种避雷器计数器测试仪校准装置，包括标准冲击发生器、直流升压控制电路、标准工频源、数据采集模块、综合智能处理单元、控制按钮、液晶屏、上位机波形分析模块。数据采集模块、控制按钮、液晶屏和上位机波形分析模块分别与综合智能处理单元连接。标准冲击发生器用于根据控制按钮设置冲击试验的预置电压值产生冲击电压波或冲击电流波，标准冲击发生器用于产生标准的工频电流，标准冲击发生器和标准工频源的信号输出端与数据采集模块连接。本发明集冲击电压电流输出与测量、工频电压电流输出与测量于一体，体积小、重量轻、方便携带，为现场测试提供了方便。
The invention provides a calibration device for a lightning arrester counter tester, which includes a standard impact generator, a DC boost control circuit, a standard power frequency source, a data acquisition module, a comprehensive intelligent processing unit, control buttons, a liquid crystal screen, and a waveform analysis module of a host computer. The data acquisition module, control buttons, LCD screen and upper computer waveform analysis module are respectively connected with the comprehensive intelligent processing unit. The standard shock generator is used to generate shock voltage wave or shock current wave according to the preset voltage value of the shock test set by the control button, the standard shock generator is used to generate the standard power frequency current, the signal output terminal of the standard shock generator and the standard power frequency source Connect with the data acquisition module. The invention integrates the output and measurement of impulse voltage and current, and the output and measurement of power frequency voltage and current, is small in size, light in weight, and easy to carry, providing convenience for on-site testing.
Description
Technical field
The present invention relates to high-voltage metering technical field, specifically a kind of counter of lightning arrester tester calibration device.
Background technology
Counter of lightning arrester widespread use in transformer substation arrester real time on-line monitoring, for the performance of monitoring lightning arrester plays an important role.Counter of lightning arrester plays a part monitoring leakage current of an arrester and statistics number of lightning strokes.The counter of lightning arrester on-line operation time is long, easily causes rolling counters forward insensitive, and the problems such as leakage current measurement is inaccurate, cause adverse effect to the normal monitoring of lightning arrester.Therefore, need to use counter of lightning arrester tester to test counter.Counter of lightning arrester tester can produce the lightning impulse current ripple of standard and the power current of certain amplitude, can be used for the performance of test counter under lightning impulse current and the Monitoring Performance of power frequency Leakage Current.But, the tester of counter of lightning arrester after long-term use, also there will be situation that is aging or that damage and occur series of problems, the wave head wave rear time of dash current as produced can not meet 8/20us (wave head wave rear time permissible error is ± 20%/± 30%) requirement of GB; Or the dash current peak value produced is too small, cannot allow counter action; Or it is inaccurate etc. to produce power frequency Leakage Current effective value.Therefore, need regularly to calibrate counter of lightning arrester tester or check.
At present, for the calibrating installation of counter of lightning arrester tester, most function singleness, method of testing is also more traditional.Such as, the time parameter and the peak value that detect surge waveform are generally use impulse voltage divider or impulse current shunt to add oscillographic mode, and greatly, weight is generally at 4kg ~ 6kg for impulse voltage divider and impulse current shunt volume, carry inconvenience, and also there is error in artificial reading.And the measurement of power current generally uses digital multimeter, but most multimeter is easily subject to external interference when measurement small area analysis (being generally mA level), causes current indication to be forbidden or has larger fluctuation.The occasion of carrying out on-the-spot test or calibration is needed for some, this traditional approach needs multiple measuring equipment just can complete the calibration of counter tester and inspection work.For this demand, convenient, the reliable calibrating installation of necessary exploitation one, regularly calibrates counter of lightning arrester tester and checks, to ensure working accurately and reliably at substation field of counter of lightning arrester tester.
Summary of the invention
The invention provides a kind of counter of lightning arrester tester calibration device, integrate the output of surge voltage electric current export with measurement, power-frequency voltage electric current and measure, for verifying the performance of counter of lightning arrester tester, also can be directly used in the on-the-spot test to counter of lightning arrester simultaneously, easy to use and measurement result is reliable.
For reaching above object, present invention employs following technical proposals:
A kind of counter of lightning arrester tester calibration device, comprise standard impulse generator, DC boosting control circuit, standard power frequency source, data acquisition module, comprehensive intelligent processing unit, control knob, liquid crystal display, host computer wave form analysis module, data acquisition module, control knob, liquid crystal display is connected with comprehensive intelligent processing unit respectively with host computer wave form analysis module, two control signal output terminals of comprehensive intelligent processing unit are connected with the control signal input end in DC boosting control circuit and standard power frequency source respectively, the signal output part of DC boosting control circuit is connected with the signal input part of standard impulse generator, the preset voltage values that standard impulse generator is used for arranging according to control knob impulse test produces surge voltage ripple or dash current ripple, standard power current source is for generation of the power current of standard, standard impulse generator is connected with data acquisition module with the signal output part in standard power frequency source, the read data order of data acquisition module also for sending according to comprehensive intelligent processing unit gathers the surge voltage signal of counter of lightning arrester tester to be measured input, dash current signal and power frequency current signal, comprehensive intelligent processing unit is analyzed dash current or High Voltage Impulse Waveform, draw out squiggle, and calculate the peak value of waveform, after wave head wave rear time parameter, deliver in host computer wave form analysis module and show, power frequency current signal inputs to comprehensive intelligent processing unit and processes after data acquisition module conversion, eventually through liquid crystal display display calibration result.
Further, comprehensive intelligent processing unit arranges the preset voltage values of impulse test by control knob, the both end voltage that described DC boosting control circuit is delivered to the high-voltage energy storage capacitor C of standard impulse generator according to the preset voltage values adjustment that comprehensive intelligent processing unit inputs reaches described preset voltage values, and the discharge loop electric discharge of standard impulse generator produces surge voltage ripple or dash current ripple.
Further, DC boosting control circuit comprises current rectifying and wave filtering circuit, medium-high frequency booster circuit, charging control circuit, voltage divider sampling capacitance, comparer, power frequency supply voltage is after current rectifying and wave filtering circuit, become DC voltage, boosting is realized through medium-high frequency booster circuit, after rectification, d. c. voltage signal is changed into the high-voltage energy storage capacitor C that required DC high voltage exports standard impulse generator to, the magnitude of voltage of the high-voltage energy storage capacitor C of voltage divider sampling capacitance collection compares with preset voltage values by comparer, by charging control circuit, FEEDBACK CONTROL is carried out to medium-high frequency booster circuit, control the voltage swing exporting high-voltage energy storage capacitor C to.
Further, standard impulse generator 1 comprises high-voltage energy storage capacitor C, resistance R1, resistance R2, resistance R3, inductance L, electric discharge contactor S, DC boosting control circuit exports the DC high voltage with preset voltage values to high-voltage energy storage capacitor C, one end of high-voltage energy storage capacitor C is connected with one end of resistance R1 by electric discharge contactor S, the other end of high-voltage energy storage capacitor C is connected with the other end of resistance R1, the branch road that inductance L and impedance matching resistor R3 are connected in series formation is connected to the node of discharge contactor S and resistance R1 and one end of resistance R2, resistance R1 is connected with the other end of resistance R2 with the node of high-voltage energy storage capacitor C.
Further, second resistance voltage-divider, Luo-coil, I/V translation circuit that data acquisition module comprises multi-channel high-speed data capture card and is connected with multi-channel high-speed data capture card, the surge voltage signal that counter of lightning arrester tester to be measured exports is after second resistance voltage-divider dividing potential drop, sampled by the high-speed collection card in data acquisition module and store, the dash current signal exported, after Luo-coil conversion, is sampled by the high-speed collection card in data acquisition module and stores; The power frequency current signal exported, after the conversion of I/V translation circuit, is sampled by the high-speed collection card in data acquisition module and stores.
Beneficial effect of the present invention is:
1, collection impacts to export and exports and calibration one with calibration, power current, and the equipment solving use conventional test methodologies is many, carry inconvenience, measure the shortcomings such as inaccurate, method step is loaded down with trivial details;
2, in the development of DC boosting part, have employed the medium-high frequency boosting mode based on PWM technology, replace the boosting mode of traditional use transformer, pressure regulator and voltage-multiplying circuit, the time parameter of the surge waveform produced and power current can be made to meet the requirements, and peak value measurement is accurate.The measurement of surge voltage, dash current and power current is all completed by data acquisition module under the control of comprehensive intelligent processing unit, accuracy of reading and calibration result is reliable.
3, host computer wave form analysis module operation is simple, can carry out Classification Management to measurement data, stores arbitrarily, printed waveform and data, automatically generates test report.
4, above-mentioned functions combines by the present invention, makes on the basis meeting integrated correction function, also has little, the lightweight and feature such as to be easy to carry of volume.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of counter of lightning arrester tester calibration device of the present invention;
Fig. 2 is the discharge loop schematic diagram of standard impulse generator of the present invention;
Fig. 3 is the circuit block diagram of DC boosting control circuit of the present invention;
Fig. 4 is the circuit block diagram of data acquisition module of the present invention;
Fig. 5 is the measuring principle figure of second resistance voltage-divider in data acquisition module of the present invention.
In figure: 1-standard impulse generator, 2-DC boosting control circuit, 3-standard power frequency source, 4-data acquisition module, 5-comprehensive intelligent processing unit, 6-control knob, 7-liquid crystal display, 8-host computer wave form analysis module.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Figure 1 shows that the circuit block diagram of counter of lightning arrester tester calibration device of the present invention, described counter of lightning arrester tester calibration device comprises standard impulse generator 1, DC boosting control circuit 2, standard power frequency source 3, data acquisition module 4, comprehensive intelligent processing unit 5, control knob 6, liquid crystal display 7, host computer wave form analysis module 8.
DC boosting control circuit 2 and standard impulse generator 1 are for generation of the dash current ripple of standard or surge voltage ripple, and standard power frequency source 3 is for generation of the power current of standard.Standard impulse current (voltage) ripple, standard power current are used for carrying out self calibration to calibrating installation measuring system, also can replace counter of lightning arrester tester, be directly used in the test of substation field to counter.
Data acquisition module 4, comprehensive intelligent processing unit 5, control knob 6, liquid crystal display 7, host computer wave form analysis module 8 realize the control of calibrating installation, measurement, analysis and Presentation Function jointly.
Be below the principle of work that device provided by the invention produces standard impulse current (voltage) ripple:
Comprehensive intelligent processing unit 5 arranges the preset voltage values of impulse test by control knob 6, and preset voltage values passes through interior 12 the D/A transducer outputting analog signals of comprehensive intelligent processing unit 5 to DC boosting control circuit 2 after converting.Two control signal output terminals of comprehensive intelligent processing unit 5 are connected with the control signal input end in DC boosting control circuit 2 and standard power frequency source 3 respectively, the control signal input end of described DC boosting control circuit 2 receives by the control signal output terminal of described comprehensive intelligent processing unit 5 preset voltage values arranged by control knob 6, (i.e. the high-voltage energy storage capacitor C of standard impulse generator 1 connects as shown in Figure 2) for the signal output part of DC boosting control circuit 2 and the signal input part of standard impulse generator 1.
The both end voltage that described DC boosting control circuit 2 is delivered to the high-voltage energy storage capacitor C of standard impulse generator 1 according to the preset voltage values adjustment that comprehensive intelligent processing unit 5 inputs reaches described preset voltage values.Wherein in an embodiment, as shown in Figure 3, DC boosting control circuit 2 comprises current rectifying and wave filtering circuit 21, medium-high frequency booster circuit 22, charging control circuit 23, voltage divider sampling capacitance 24, comparer 25 to the circuit structure of DC boosting control circuit 2.
Power frequency supply voltage, after current rectifying and wave filtering circuit 21, becomes DC voltage, realizes changing d. c. voltage signal into high-voltage energy storage capacitor C that required DC high voltage exports standard impulse generator 1 to after boosting, rectification through medium-high frequency booster circuit 22.Its medium-high frequency booster circuit 22 comprises intermediate frequency full bridge inverter, I.F.T., cockcroft-walton voltage multiplier circuit, intermediate frequency full bridge inverter adopts IGBT, DC voltage is reverse into midfrequent AC voltage, boosting is realized by I.F.T., again through cockcroft-walton voltage multiplier circuit, voltage signal is changed into required DC high voltage and export.The magnitude of voltage of the high-voltage energy storage capacitor C that voltage divider sampling capacitance 24 gathers by comparer 25 compares with preset voltage values, carries out FEEDBACK CONTROL by charging control circuit 23 pairs of medium-high frequency booster circuits 22, controls the voltage swing exporting high-voltage energy storage capacitor C to.
As shown in Figure 2, wherein C is high-voltage energy storage capacitor to discharge loop in standard impulse generator 1; R1, R2 form resistance in the duration of pulse; R3 is impedance matching resistor; L forms inductance the rise time; S is electric discharge contactor.One end of high-voltage energy storage capacitor C is connected with one end of resistance R1 by electric discharge contactor S, and the other end of high-voltage energy storage capacitor C is connected with the other end of resistance R1.The branch road that inductance L and impedance matching resistor R3 are connected in series formation is connected to the node of discharge contactor S and resistance R1 and one end of resistance R2, and resistance R1 is connected with the other end of resistance R2 with the node of high-voltage energy storage capacitor C.
DC boosting control circuit 2 charges to the high-voltage energy storage capacitor C in standard impulse generator 1, and by the voltage on comprehensive intelligent processing unit 5 Real-Time Monitoring high-voltage energy storage capacitor C, when the voltage on high-voltage energy storage capacitor C reaches preset voltage values, under the effect of comprehensive intelligent processing unit 5, make electric discharge contactor S close, discharge to discharge loop.Through composite wave generating loop, (composite wave generating loop is fairly simple general circuit, also be standard common saying, for output voltage and current signal on the panel that the terminal in composite wave loop is directly drawn out to device) to export maximum amplitude be open a way surge voltage ripple or maximum amplitude of the 1.2/50 μ s of 6kV is the short-circuit impact current wave of the 8/20 μ s of 3kA, waveform parameter meets the requirement of GB GB18802.1-2002.
Standard impulse generator 1 is connected with comprehensive intelligent processing unit 5 by data acquisition module 4 with the data sampling end in standard power frequency source 3, the data sampling end of described data acquisition module 4 also accesses the surge voltage signal of counter of lightning arrester tester to be measured input, dash current signal and power frequency current signal, and comprehensive intelligent processing unit 5 is also connected with control knob 6, liquid crystal display 7, host computer wave form analysis module 8.Data acquisition module 4 as shown in Figure 4, is made up of second resistance voltage-divider 42, Luo-coil 43, I/V translation circuit 44 and a multi-channel high-speed data capture card 41.
Comprehensive intelligent processing unit 5 sends read data order to data acquisition module 4, and the surge voltage signal that counter of lightning arrester tester to be measured exports, after second resistance voltage-divider 42 dividing potential drop, is sampled by the high-speed collection card in data acquisition module 4 and stores; The dash current signal exported, after Luo-coil 43 is changed, is sampled by the high-speed collection card in data acquisition module 4 and stores; The power frequency current signal exported, after I/V translation circuit 44 is changed, is sampled by the high-speed collection card in data acquisition module 4 and stores.
Comprehensive intelligent processing unit 5 sends read data order to data acquisition module 4, the peak value of the surge voltage signal read, dash current signal is delivered to after single-chip microcomputer process in host computer wave form analysis module 8 and show, the power frequency current signal read is delivered to liquid crystal display 7 after treatment and shows.Host computer wave form analysis module 8, except display surge voltage and impulse current waveform, and outside wave front time, half time to peak and peak value, also can be carried out convergent-divergent to waveform, pull, store and the operation such as printing.
Principle below for calibrating counter of lightning arrester tester:
Counter of lightning arrester tester (hereinafter referred to as sample) to be calibrated is connected with calibrating installation of the present invention (hereinafter referred to as calibrating installation).Concrete connected mode is: the signal input part (the i.e. data acquisition module 4) output terminal of sample being connected to calibrating installation, the surge voltage that sample is exported, dash current, power current can enter the signal input part of calibrating installation.Connected rear carry out respectively dash current and power current calibration, can surge voltage calibration be carried out if desired.
When carrying out dash current (voltage) and calibrating, click starting in host computer wave form analysis module 8 and gather button, comprehensive intelligent processing unit 5 sends data acquisition command to data acquisition module 4, and acquisition module 4 enters duty; Now press the trigger button on sample, sample produces dash current (or surge voltage), Luo-coil 43 in acquisition module 4 is (when sample produces surge voltage, for second resistance voltage-divider 42) collect the signal that sample exports, and be uploaded to comprehensive intelligent processing unit 5 after carrying out the process such as analog to digital conversion by high-speed collection card 41.Comprehensive intelligent processing unit 5 pairs of dash current (voltage) waveforms are analyzed, and draw out squiggle, and after calculating the peak value of waveform, wave head wave rear time parameter, deliver in host computer wave form analysis module 8 and show.In host computer wave form analysis module 8, observable dash current (voltage) waveform, carries out the operations such as convergent-divergent, towing, storage and printing to waveform.
The waveform of host computer wave form analysis module 8 display, be the dash current (voltage) of the sample generation that calibrating installation measures, whether Standard can be met by dash current (voltage) waveform that sends of judgement sample according to this waveform, and then judgement sample performance; The parameter that the parameter measured by calibrating installation and sample show contrasts, and has got final product the calibration of paired samples dash current (voltage).
When carrying out power current calibration, the power current that sample produces directly enters I/V conversion module 44.The core of I/V conversion module 44 is measuring resistances, current signal is become voltage signal by it, and then enter in high-speed data acquisition card 41 and carry out analog to digital conversion, finally input to comprehensive intelligent processing unit 5 and process, show calibration result eventually through liquid crystal display 7.On liquid crystal display 7, the electric current of display is the power current of the sample output that calibrating installation measures.The data that this electric current and sample show are contrasted, has got final product the calibration of paired samples power current.In conjunction with the nominal accuracy grade of sample, can the error of standard of comparison value and indicating value further, the power current output performance of sample is judged.
14 multi-channel high-speed capture cards 41 of the core of data acquisition module 4 to be sampling rates be 100MHz, the mode triggered by single obtains surge voltage, impulse current waveform; Can trigger port be selected, and a suitable triggering level value is configured in capture card hardware; Can pass through software merit rating enable hardware median filter function, filtering noise, in order to avoid the judgement affecting trigger pip; Host computer wave form analysis module 8 shows surge voltage, current waveform simultaneously, and can distinguish peak value corresponding to display waveform, wave front time and half peak time; In waveform display area, can be pulled by mouse and move waveform position in a coordinate system; The amplitude of waveform and time can regulate by button; Waveform and corresponding parameter can be preserved by the mode of text.
In data acquisition module 4, secondary electric resistance partial pressure measuring principle as shown in Figure 5, test product high-pressure side, low pressure end respectively connect the equal voltage divider of a no-load voltage ratio, the voltage signal that two voltage dividers export is respectively residual pressure signal I and residual pressure signal II again after stage resistive dividing potential drop, through difference channel, namely obtain the difference of residual pressure signal I and residual pressure signal II, be reduced to the actual residual voltage value at test product two ends like this.The signal reference ground in metering circuit can be got in the reference signal ground of residual pressure signal I, II simultaneously, can solve and measured signal and discharge loop problem altogether.
Be below the principle of generation standard power current:
The voltage source module of a 0 ~ 100V is comprised, its output voltage continuously adjustabe in standard power frequency source 3.This power-frequency voltage can be directly used in the counter test of substation field.During on-the-spot test, power frequency supply 3 is exported two ends and is connected to counter two ends, and the I/V conversion module 44 that power current is calibrated is sealed in loop.By the output voltage in control knob 6 adjustable standard power frequency source 3, I/V conversion module 44 module acquires obtains electric current and is presented on liquid crystal display 7 after treatment, the electric current that the electric current sum counter display disc of comparative liquid crystal screen display shows, can realize the verification to counter Leakage Current accuracy of measurement.The present embodiment standard power frequency source 3 adopts DDS chip and power amplification circuit to realize, and which circuit structure is simple, and output prograin is high and be easy to control.
Comprehensive intelligent processing unit 5 is arranged by control knob 6 and selects power current measurement range, comprehensive intelligent processing unit 5 sends read data order to data acquisition module 4, the power frequency electric flow valuve of the counter of lightning arrester tester to be measured read is delivered to liquid crystal display 7 after I/V translation circuit 44 (I/V translation circuit 44 is exactly utilize a measuring resistance, and current signal is converted to voltage signal) process show.
Host computer wave form analysis module 8 is connected with comprehensive intelligent processing unit 5 by USB interface, surge voltage sampling channel or dash current sampling channel can be selected by host computer wave form analysis module 8, and can triggering level be set, configuration order is sent to comprehensive intelligent processing unit 5 by USB interface, by comprehensive intelligent processing unit 5 configuration order is sent to the high-speed data acquisition card in data acquisition module 4 after treatment again.Host computer wave form analysis module 8 can show surge voltage and impulse current waveform, and wave front time, half time to peak and peak value, and can carry out convergent-divergent to waveform, pulls, stores and the operation such as printing.
Described counter of lightning arrester tester calibration device, by changing external wiring pattern, the impact of the impact that measurement mechanism self can be selected to produce or the input of measurement mechanism outside.By changing the mode of connection, the power current that measurement mechanism self can be selected to produce still measures outside power current.
Host computer wave form analysis module 8 is configured by comprehensive intelligent processing unit 5 pairs of capture cards, surge voltage sampling channel or dash current sampling channel can be selected, and can triggering level be set, configuration order is sent to comprehensive intelligent processing unit 5 by USB interface, by comprehensive intelligent processing unit 5 configuration order is sent to the high-speed collection card in data acquisition module 4 after treatment again.Surge voltage and impulse current waveform can be shown in host computer wave form analysis module 8, and wave front time, half time to peak and peak value, and convergent-divergent can be carried out to waveform, pull, store and the operation such as printing.
The design parameter feature of this calibrating installation embodiment is as follows:
(1) surge voltage peak value measurement precision is ± 3%, and impact current for measuring precision is ± 10%;
(2) output is impacted: surge voltage wave front time error is ± 30%, half peak value time error is ± 20%, and front time of impulse current, half peak value time error are ± 10%;
(3) output voltage stabilization degree in power frequency source is 0.02%/1min, and power current measuring error is ± 0.2%;
(4) host computer wave form analysis module operation is simple, can carry out Classification Management to measurement data, stores arbitrarily, printed waveform and data, automatically generates test report;
(5) have 14 multi-channel data acquisition boards that sampling rate is 100MHz, by the configuration of host computer wave form analysis module, single catches High Voltage Impulse Waveform, impulse current waveform.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (5)
1. a counter of lightning arrester tester calibration device, it is characterized in that: comprise standard impulse generator (1), DC boosting control circuit (2), standard power frequency source (3), data acquisition module (4), comprehensive intelligent processing unit (5), control knob (6), liquid crystal display (7), host computer wave form analysis module (8), data acquisition module (4), control knob (6), liquid crystal display (7) is connected with comprehensive intelligent processing unit (5) respectively with host computer wave form analysis module (8), two control signal output terminals of comprehensive intelligent processing unit (5) are connected with the control signal input end in DC boosting control circuit (2) and standard power frequency source (3) respectively, the signal output part of DC boosting control circuit (2) is connected with the signal input part of standard impulse generator (1), standard impulse generator (1) produces surge voltage ripple or dash current ripple for the preset voltage values arranging impulse test according to control knob (6), standard power current source (3) is for generation of the power current of standard, standard impulse generator (1) is connected with data acquisition module (4) with the signal output part in standard power frequency source (3), the read data order of data acquisition module (4) also for sending according to comprehensive intelligent processing unit (5) gathers the surge voltage signal of counter of lightning arrester tester to be measured input, dash current signal and power frequency current signal, comprehensive intelligent processing unit (5) is analyzed dash current or High Voltage Impulse Waveform, draw out squiggle, and calculate the peak value of waveform, after wave head wave rear time parameter, deliver in host computer wave form analysis module (8) and show, power frequency current signal inputs to comprehensive intelligent processing unit (5) and processes after data acquisition module (4) conversion, by liquid crystal display (7) display calibration result.
2. counter of lightning arrester tester calibration device as claimed in claim 1, it is characterized in that: comprehensive intelligent processing unit (5) arranges the preset voltage values of impulse test by control knob (6), the both end voltage that described DC boosting control circuit (2) is delivered to the high-voltage energy storage capacitor C of standard impulse generator (1) according to the preset voltage values adjustment that comprehensive intelligent processing unit (5) inputs reaches described preset voltage values, and the discharge loop electric discharge of standard impulse generator (1) produces surge voltage ripple or dash current ripple.
3. counter of lightning arrester tester calibration device as claimed in claim 1, it is characterized in that: DC boosting control circuit (2) comprises current rectifying and wave filtering circuit (21), medium-high frequency booster circuit (22), charging control circuit (23), voltage divider sampling capacitance (24), comparer (25), power frequency supply voltage is after current rectifying and wave filtering circuit (21), become DC voltage, boosting is realized through medium-high frequency booster circuit (22), after rectification, d. c. voltage signal is changed into the high-voltage energy storage capacitor C that required DC high voltage exports standard impulse generator (1) to, the magnitude of voltage of the high-voltage energy storage capacitor C that voltage divider sampling capacitance (24) gathers compares with preset voltage values by comparer (25), by charging control circuit (23), FEEDBACK CONTROL is carried out to medium-high frequency booster circuit (22), control the voltage swing exporting high-voltage energy storage capacitor C to.
4. counter of lightning arrester tester calibration device as claimed in claim 1, it is characterized in that: standard impulse generator 1 comprises high-voltage energy storage capacitor C, resistance R1, resistance R2, resistance R3, inductance L, electric discharge contactor S, DC boosting control circuit (2) exports the DC high voltage with preset voltage values to high-voltage energy storage capacitor C, one end of high-voltage energy storage capacitor C is connected with one end of resistance R1 by electric discharge contactor S, the other end of high-voltage energy storage capacitor C is connected with the other end of resistance R1, the branch road that inductance L and impedance matching resistor R3 are connected in series formation is connected to the node of discharge contactor S and resistance R1 and one end of resistance R2, resistance R1 is connected with the other end of resistance R2 with the node of high-voltage energy storage capacitor C.
5. counter of lightning arrester tester calibration device as claimed in claim 1, it is characterized in that: the second resistance voltage-divider (42) that data acquisition module (4) comprises multi-channel high-speed data capture card (41) and is connected with multi-channel high-speed data capture card (41), Luo-coil (43), I/V translation circuit (44), the surge voltage signal that counter of lightning arrester tester to be measured exports is after second resistance voltage-divider (42) dividing potential drop, sampled by the high-speed collection card in data acquisition module (4) and store, the dash current signal exported is after Luo-coil (43) conversion, sampled by the high-speed collection card in data acquisition module (4) and store, the power frequency current signal exported, after I/V translation circuit (44) conversion, is sampled by the high-speed collection card (41) in data acquisition module (4) and stores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538729.4A CN104237831B (en) | 2014-10-13 | 2014-10-13 | A kind of counter of lightning arrester tester calibration device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931910A (en) * | 2015-06-09 | 2015-09-23 | 苏州市华安普电力工程有限公司 | Tester for lightning stroke counter |
| CN105738853A (en) * | 2016-05-12 | 2016-07-06 | 苏州华电电气股份有限公司 | Automatic checking platform of high-voltage alternating-current voltage divider |
| CN105759235A (en) * | 2016-05-12 | 2016-07-13 | 苏州华电电气股份有限公司 | Automatic check platform for high-voltage direct-current voltage divider |
| CN105823999A (en) * | 2016-04-22 | 2016-08-03 | 中国电子技术标准化研究院 | Calibrator for high-power intelligent graphic instrument |
| CN106199396A (en) * | 2015-05-05 | 2016-12-07 | 江苏苏益电器股份有限公司 | Online residual current circuit breaker dynamic characteristic detection device and detection method thereof |
| CN106646307A (en) * | 2016-10-14 | 2017-05-10 | 国家电网公司 | Lightning arrester counter calibration device |
| CN107064848A (en) * | 2017-05-25 | 2017-08-18 | 国家电网公司 | Transmission line of electricity distributed diagnostics device check system and method |
| CN107356833A (en) * | 2017-07-19 | 2017-11-17 | 国网湖南省电力公司 | A kind of control measuring circuit of power frequency continued flow experimental rig |
| CN107861081A (en) * | 2017-06-16 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of valve arrester performeter checking instrument |
| CN109298366A (en) * | 2018-11-16 | 2019-02-01 | 苏州市计量测试院 | A solar cell IV curve measuring instrument calibration device |
| CN112649652A (en) * | 2020-11-18 | 2021-04-13 | 中国电力科学研究院有限公司武汉分院 | Tracing method and system for impact current magnitude |
| CN112858985A (en) * | 2021-04-25 | 2021-05-28 | 武汉磐电科技股份有限公司 | Whole inspection device and method for discharge counter calibrator for lightning arrester |
| CN117110968A (en) * | 2023-10-17 | 2023-11-24 | 广东省计量科学研究院（华南国家计量测试中心） | Welding current measuring instrument calibration system based on transformer |
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| CN202956620U (en) * | 2012-11-06 | 2013-05-29 | 四川省电力公司德阳电业局 | Automatic Control Device of Arrester Discharge Counter Calibrator |
| CN104049231A (en) * | 2014-06-05 | 2014-09-17 | 国家电网公司 | Integrated system for testing delay of separated units of optical electronic transformer |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199396A (en) * | 2015-05-05 | 2016-12-07 | 江苏苏益电器股份有限公司 | Online residual current circuit breaker dynamic characteristic detection device and detection method thereof |
| CN104931910A (en) * | 2015-06-09 | 2015-09-23 | 苏州市华安普电力工程有限公司 | Tester for lightning stroke counter |
| CN105823999A (en) * | 2016-04-22 | 2016-08-03 | 中国电子技术标准化研究院 | Calibrator for high-power intelligent graphic instrument |
| CN105738853A (en) * | 2016-05-12 | 2016-07-06 | 苏州华电电气股份有限公司 | Automatic checking platform of high-voltage alternating-current voltage divider |
| CN105759235A (en) * | 2016-05-12 | 2016-07-13 | 苏州华电电气股份有限公司 | Automatic check platform for high-voltage direct-current voltage divider |
| CN106646307A (en) * | 2016-10-14 | 2017-05-10 | 国家电网公司 | Lightning arrester counter calibration device |
| CN107064848A (en) * | 2017-05-25 | 2017-08-18 | 国家电网公司 | Transmission line of electricity distributed diagnostics device check system and method |
| CN107861081A (en) * | 2017-06-16 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of valve arrester performeter checking instrument |
| CN107356833A (en) * | 2017-07-19 | 2017-11-17 | 国网湖南省电力公司 | A kind of control measuring circuit of power frequency continued flow experimental rig |
| CN109298366A (en) * | 2018-11-16 | 2019-02-01 | 苏州市计量测试院 | A solar cell IV curve measuring instrument calibration device |
| CN112649652A (en) * | 2020-11-18 | 2021-04-13 | 中国电力科学研究院有限公司武汉分院 | Tracing method and system for impact current magnitude |
| CN112649652B (en) * | 2020-11-18 | 2023-10-03 | 中国电力科学研究院有限公司武汉分院 | Tracing method and system for impulse current magnitude |
| CN112858985A (en) * | 2021-04-25 | 2021-05-28 | 武汉磐电科技股份有限公司 | Whole inspection device and method for discharge counter calibrator for lightning arrester |
| CN117110968A (en) * | 2023-10-17 | 2023-11-24 | 广东省计量科学研究院（华南国家计量测试中心） | Welding current measuring instrument calibration system based on transformer |
| CN117110968B (en) * | 2023-10-17 | 2024-03-19 | 广东省计量科学研究院（华南国家计量测试中心） | Welding current measuring instrument calibration system based on transformer |
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